I believe the table is on a small incline (i.e. it's not perfectly horizontal). If you think about it, it's pretty hard to find a table that's perfectly leveled

I believe the table is on a small incline (i.e. it's not perfectly horizontal). If you think about it, it's pretty hard to find a table that's perfectly leveled anyway. I have no idea how sensitive the accelerometer truly is so it could be a hoax (but probably it is not).